Music stand



JUY 15, 1929- A. ERlczssoN 1.720.827

l MUSIC STAND Filed Oct. 29, 1928 3 Sheets-Sheetv 5 ATTQRNEY.

CIV

Patented July 16, 1929.

UNITED STATES ALBERT ERICSSON, OF JOVDALEN, SWEDEN.

MUSIC STAND.

Application filed October 29, 1928, Serial No. 315,879,21116. in Sweden February 11, 1927.

rlhis invention is for a combined sheet music stand and music sheet turner. The primary object of the invention' is to construct a support for sheet music which can be readily turned by the foot of a person standing or sitting before the device, sheet by sheet as the rendition of the music inscribed thereon proceeds, and which can be collapsed into the smallest possible space so that it can be conveniently carried in the hand from place to place.

A further object of the invention is to produce a music stand of the character indicated having atelescopic standard composed of a plurality of tubular members which may be telescoped within each other whereby its length will be but the approximate length of one of the members.

A further object of the invention is to `provide a support for sheet music upon which a music sheet may be readily turned from the right or from the left by a pressure of the foot of a person standing or sitting before the support.

Applicant is aware that many devices have been proposed for turning sheet music for pianos and the like, all of which have proven more or less cumbersome, unsightly and i1iefficient in operation. Nhat applicant has sought to do and has succeeded in doing is to provide a music stand having means for turnin g the pages of a piece of music supported by the stand, sheet by sheet in a definite and efficient manner by a mere touch of the foot of a. person stan ding or sitting before the stand during the rendition of the music inscribed on the several sheets and the ldevice is adapted more particularly for musicians forming an orchestra.

For a more clear and definite comprehension of the device, reference will now be made to the accompanying drawings in Vwhich is illustrated the preferred embodiment of the invention and in which Fig. 1 is a front elevation of the invention showing the sheet music support with a plurality of sheets of music supported on the right hand side thereof and in engagement with the leaf turninoj fingers andready to be turned sheet by sheet from the right to the left.

Fig. 2 is a central vertical section through the upper portion of the standard showing the disks for operating the leaf turningfingers which are shown in full lines and partially broken away, also showing the bottom leaf turning finger in collapsed position in dotted lines.

Fig. 3 is a view partly in full lines and partly in section showing the locking fingers raised to their limit of upward travel.

Fig. 4; is a horizontal section taken on line 4-4 of Fig. 2 showing the cam-faced lugs for elevating the locking finger and rotating the disks, the lugs having inwardly extending studs for engaging the operating shaft.

Fig. 5 is an enlargeddetail of one of the clips carried by the sheet turning fingers for engaging one of the sheets of music.

Fig. 6 is a vertical sectional viewv of the two upper tubular portions of the standard with portions of the tubular sections broken away and showing the operating shaft in full lines.-

Fig. 7 is a horizontal sectional view taken on line 7-7 of Fig. 8.

F ig. 8 is an enlarged detail of the standard, the tubular members composing the standard being shown in telescoped relation with parts of the standard being broken away and parts of the mechanism being shown in full lines.

Fig. 9 is an elevational view of the housing and associated parts with a portion of the housing broken awav to give a clearer view of the mechanism therewithin and a portion of the lower tubular section and of the operating shaft broken away.

Fig. 10 is a horizontal view partly in section and partly in full lines taken on line 10-10, Fig. 1.

Fig. 11 is an enlarged detail partly in section and partly in full lines showing the connection between the operating shaft and the universal joint.

Fig. l2 is a detail partly in section and partly in 1full'lines showing the bearing for the operating pedal shaft and the operating shaft, and is taken at right angles to the view shown in Fig. 18.

Fig. 13 is a horizontal sectional view taken on line 13--13 of Fig. 12.

F ig. 14 is a detail of the operating lugs for 'rotating the disks.

Fora 'more comprehensive understanding of the device, the invention will now be described in detail, reference being had to the reference characters which indicate like parts in theseveral figures of the drawings. Reference character A indicates the standard generally for supporting the music rack at the upper end thereof and comprises a plurality of telescopic tubular sections 20, 21, 22 and 23.

The base section 23 has affixed thereto at its lower extremity housing 24 to which is aiiixed at its upper end collar 25. Pivotally related thereto as at 26 at their inner ends are struts 27 which are pivotally related at the other of their ends to supporting legs or member 29 as at 28. Adjacent the lower extremities of legs 29 are aiiixed eye members 30 to which are linked braces 31 which in turn are pivotally related to supporting member 32 which supports operating pedal 33 which is provided with arms 34, 35, 36, and 37, being spaced apart ninety degrees of a circle, thereby insuring that two of the arms ofthe op erating pedal will always lie in a horizontal plane, the purpose for which will be apparent as the description of the device proceeds.

Operating` pedal 33 is affixed to the outer end of shaft 38 which is pivotally related at its inner enti to stub shaft 39 as at 40. Legs 29 are pivotally related at their upper ends as at 41 to collar 42 which is capable of reciprocal longitudinal movement on tubular section 23 and may be fiXedly secured thereto by a set screw 42a.

From the structure just described, it will be readily seen that legs 29, struts 27 and shaft 38 together with operating pedal 33 may be moved inwardly against tubular section 23 and caused to lie in substantially parallel relation thereto. Housing 24 is provided with externally screw-threaded boss 43 which is provided with internally screwthreaded cap 44 having an aperture 45 therethrough for the free rotation of stubv shaft 39. Stub shaft 39 is journalled at its inner end in bearing 5() in block 45a within the housing 24 and has affixed thereto bevelled gear 51 which meshes with bevelled gear 52 carried by the operating shaft 53. Operating shaft 53 passes upwardly through the bottom of the cup-shaped member 55 and may be secured to the cup-shaped member for the purpose of rotating the same in any desired manner. As shown in the drawings, the shaft 53 is square and engages the square aperture 54 in the bottom of the cup-shaped member 55 for engaging the cup in rotary movement. Cup-shaped member 55 is provided against longitudinal movement with relation to tubular member 22 by pin 5G which passes through the wall of the tube and engages circumferential groove 57 in the outer face of the base of the cup-shaped member 55. The tube 58 is securedto liange 59 of the cup-shaped member 55 in any suitable manner and is adapted to rotate theren with. Tubular member 60 has pin 6()C eX- tending through the wall thereof with its inner end engaging slot 60d in the wall of the propeller 61 for rotating the propeller with the tubular member 58, and to permit of the reciprocal longitudinal movement of the propeller with relation to the tubular member 58. Rotatably mounted within tubular member 2O is propeller 61, having outwardly extending lugs 64 overlying the upper extremity of the tubular member 20, which lugs are bevelled on their opposite upper and lower faces as shown in Fia'. 14, the bevel being for the purpose of easing the lugs into proper adjustment for engaging the disks ($9 successively in their upward and downward travel and preventing jamming of the lugs with the disk to compensate for any lack of perfect adjustment of the parts that might obtain there-V between. The faces of the bevels of lug 64 lie in parallelism with the side walls of grooves 60'b in propeller 61.

From the foregoing, it will be seen that if the shaft 53 is rotated from left to right by the depression of one of the wings of the operating pedal 33 with the foot, the propeller 61 will be caused to travel upwardly by reason of the engagement of pin 60"L which passes through the wall of tubular section 58 with the spiral groove G3L in the groove thereof.

The pitch of the spiral groove 60" in the face of the propeller 61 is such that the lug 64 will be elevated in the casing 69, a distance equal to the combined thickness of one of the disks 69 and one of the anti-friction members 'TO when the propeller is rotated one hundred and eighty degrees by the depression of one of the wings of the operating pedal 33, thus passing from engagement with one of the disks 69 to engagement with the disk immediately above the disk which has just been turned and carrying with it the sheet music turning finger 72 thereto attached, together with the sheet of music secured by the clip 73 to the outer end of the turning finger and will then be in position to turn the next disk, and so on upwardly throughout the entire series of disks, disk 69 having interposed therebetween anti-friction washers 70 and are apertured through the center for the passage upwardly therethrough of propeller 61. The apertures of disk G9 have recesses G4a formed in their diametrically opposite sides for the reception therein of lugs 64 for operating the sheet music leaf turning fingers when the shaft 38 of the operating pedal is revolved one hundred and eighty degrees of a circle by the depression with the foot of one of its wings. The'shaft 53 and consequently the propeller 61 by reason of its inter-connection with the cup-shaped member 55 will be revolved one hundred eighty degrees for the reason that bevelled gear 51 carried by stub shaft 39 is exactly twice the circumference of the ,bevelled gear 52 carried by shaft 53 which results in the turning of one of the turning fingers from right to left one-half circle or one hundred eightly degrees and carrying with it the sheet of music held in clip 7 3 and uncovering the sheet of music immediately thereunder, after which operation it will readily be seen that the propeller will have advanced upwardly a distance equal to the combined thickness of one of the disks G9 and one of the washers and be in position to move upwardly and at Vthe same time carry with it locking fingers 65 and 71, which lie in the path of movement of lugs (34, thus relieving the next succeeding disk upwardly from engagement with the locking linger and be in position to carry with it the next upwardly succeeding leaf turning fingers from right to left. Y

Shaft 83 is provided with longitudinal grooves 74- for the reciprocal longitudinal movement therein of the inner reduced ends of lug G-l (see Fig. 4) and for securing the propeller G1 against rotary movement with relation to the shaft 83. Tubular section 60 adjacent its upper end is bent at an angle as at 7 6 for supporting collapsible music rack 77 for the purpose of presenting the sheet of music placed thereon at a proper angle to the eye of a person reading the music. Afiixed to the upper end of tubular section 60 and rotatable therewith is centering block 7 8 having secured thereto the lower member 7 9 of the universal joint 82. Section S3 of the operating shaft is connected to the other of the universal' members 81 through the medium of the rotatable spacing block -8-1 as at 85. The spacing block is secured against longitudinal movement by pins passing through the wall of the cylinder and engaging peripheral grooves 7 8LL of the block. Set screw SG is provided for securing collar in adjusted position with relation to tubular section 20 and set screw 87, 8S and 89 passing through the tubular sections 20, 22 and 23 respectively and in threaded engagement therewith are provided for securing the respective tubes in longitudinal adjusted position. Tubular section 20 has affixed thereto at its outer end housing 103 having slots 103a extending one hundred eight-y degrees around its periphery for the movement therethrough of turning finger 7 2. Affixed to Vtubular section 20 is collar 90 which carries on its front portion a supporting' strip 91 for supporting the music rack 77 which 'is provided with an angular base 92 having an upstanding flange 93 at the rear edge thereof which flange is pivotally related to supporting strip 91 as at 94 to provide for parallel alignment of the pivotal members forming the music rack with the tubular section 20 when in folded position.

The music rack 77 is formed by pivotally related straps 95 and 97 which in turn are pivotally related with flange 93. Strap 95 is detachably related to the supporting strip 91 as at 9G, as for instance with a hook engagement over a stud at one of its ends and pivotally related to flange 93 at the other of its ends as at 99. Strap 97 is pivotally related to strap 95 at their approximate centers and has its lower end detachably related to flange 93 as at 97', the relation between the strap and the flange being accomplished the same as the relation between the upper end of the strap 95with the supporting strip 91 as just explained. Straps 95 and 97 with their connections are duplicated on the right hand side of supporting strip 91 and are covered by sheets of music 107 as shown in Fig. 1.

From the foregoing it will be readily seen that upon releasing the straps 95 and 97 from their respective hook engagements, the entire rack can be collapsed, the straps lying parallel with the flange 93 and upon the base 92 of the rack 77, thus allowing the entire folded or collapsed structure to be swung into parallel relation with tube 20 by reason of the pivotal relation between the base 92 and the supporting strip 91 as at 94. Leaf turning fingers 72 areprovided with pivots 72Il which are adapted to be received in slidable relation within sleeves 7 2b for the purpose of securing the lingers in horizontal position by movement of the sleeves outwardly of the linger andpermitting the fingers to pivot downwardly in parallel relation with the standard, as shown in Fig. 2, when the sleeve is moved inwardly 'uncovering the pivot.

Locking device 100 is provided with standard 101 which is extended at its upper end in a right angular direction and then right angularly downward forming locking finger 71, and has extending from the base upwardly and in vertical alignment with locking finger 71, locking finger 71, the locking fingers 71 and 71;L being spaced apart for the passage therebetween of lugA 64 carried by the propeller 61 as clearly shown in Fig. 3, space 10.2 between the standard 101 and the locking fingersy 71 and 71a provides a clearance between these members for the passage therebetween of 'the wall of the casing 103 and that portion of the disks lying between the outer periphery thereof and the outer peripheral edge of the slots. The standard 101 of the locking device is secured between ears 104 of the collar 105 surrounding propeller G1 adjacent the lower end thereof in such manner as to permit of free rotation of the propeller within the collar and is secured in proper longitudinal relation to the propeller by collar 106 which is fixedly secured to the propeller below the collar 105 and upon which the colbar 105 rests.

In Fig. 2 of the drawings the propeller 61 is shown at the limit of its downward movement with the top of the lugs 64- carried by: the upper end thereof just below the lower face of the lower disk 69 from which position the propeller will be raised upwardly into slot G11 of the lower disk 69 for rotating the disk from right-'to left one hundred eighty degrees of a circle by depression by the footof one of the wings of the operating pedal lying to the left of shaft 88, the disk carrying with it turning linger 72 and the uppermost sheet of music 107 secured to the turning finger by clip 73, the pitch of the spiral groove 63rt in propeller 61 being such that the lng` G4. will have moved upwardly and cleared the top tace of disk G9 at the moment the disk and turning linger have rotated one hundred eighty degrees of a circle when the lugs Gel; will be in position to move upwardly and engage the slot Get of the next disk up- 'fardly ot the series of disks and turn this disk one hundre-fl eighty degrees ot a circle and so on throughout the series of disks until the cylinder and lugs ,64 carried thereby have reached the limit of their upward travel with the bottom tace of the lugs slightly above the top face ot the uppermost disk (see F ig. 3), at which time the bottom or last sheet of music 107 placed upon the rack 77 rwill have been turned to the lett hand side of the rack and the mechanism be in position to return the sheets ot music to their original position on the rack. llhen it is desired to return the sheets ot music to their original position on rack 77, the mechanism is operated in the reverse of that liust described, which is readily accomplished byl rotating shaft 39 in an opposite direction by the placing of the 'foot on one of the wings ot the operating pedal lying to the right oit the shaft and pressing downwardly.

Having thus described my invention, what I claim is:

l. A combined music rack and music sheet turner comprising a tubular standard, a pluy rality of centrally apertured disks having recesses in the periphery oi the apertures, super-imposed one above another and rotatably mount-ed within the cylinder, a rotatable propeller within the cylinder and capable of reciprocal longitudinal movement therein and through the apertures of the disks, lugs carried by the propeller for engaging the walls of the recesses and means for reciprocally moving the propeller longitudinally of the standard step by step in such manner as to rotate the disks progressively from right to left and left to right throughout the series oi disks.

2. A combined music rack and music sheet turner comprising a tubular standard, a plurality ol' centrally apertured disks having recesses in the periphery of the apertures, super-imposed one upon another and rotatably mounted within the standard, a propeller having disk engaging lugs and capable of reciprocal longitudinal movement within the standard, and means for reciprocally moving the propeller longitudinally of the standard step by step in such manner as to rotate the disks progressively from left to right and right to left throughout the series of the disks.

3. A combined music rack and music sheet turner having a tubular standard, centrally apertured disks rotatably mounted Within the standard and having recesses in the periphery of the apertures, sheet music lealiI turning lingers carried by the disks, a rotatable propeller within the standard, lugs carried by the propeller and adapted to enter the recesses and means for rotating the propeller.

4:. A combined music rack and music sheet turner comprising a tubular standard, a plurality of Vapertured disks rotatably mounted within the standard, a rotatable member within the standard having lugs for engaging means on the disks, means for siniultaneously rotating the rotatable member and moving it longitudinally of the standard for engaging the rotatable disks and means for locking the disks against rotation..

5. A combined music rack and music sheet turner having a tubular standard, a rotatable spacing block within the standard, a rotatable tubular member atliXed to the block, a cylinder within the tubular member and adapted to rotate therewith, a spacing block affixed to one end of the cylinder, a power shaft aliXed to the block, rotatable disks within the standard and rotatable by the shaft and means for rotating the first-named spacing block.

G. A combined music rack and music sheet turner having a tubular standard, a rotatable` thereof, a pin passing through the tubular member and engaging the slot, a spacing block atliXed to one end of the cylinder, a power shaft aiiXed to the block, rotatable disks within the standard and rotatable by the shaft and means for rotating the firstnamed spacing block.

7. A combined music rack and sheet music turner comprising a tubular section, a tubular casing aliixed thereto, spaced apart discs having diametrically opposite recesses therein rotatably mounted within the casing, a propeller having diametrically opposite lugs thereon rotatably mounted within the tubular member and means Jfor advancing the propeller within the casing the thickness of one of the discs and one of the spaces while simultaneously rotating the propeller 180o.

- 8. A combined music rack and sheet music turner comprising a tubular section, a tubular casing having spaced apart centrally apertured rotatable discs and recesses on diametrically opposite sides of the apertures, clip fingers secured to t-he discs, a tubular member aiiiXed to one end of the casing, a

cesses, means for advancing th`e-propeller within the casing a predetermined distance while simultaneously rotating the propeller 180.

9. A combined music rack and sheet music turner comprising a cylindrical casing,spaced apart apertured rotatable discs having recesses 0n dian'ietrically opposite sides of the apertures, apertured washers interposed between the discs, a tubular member allixed to the cylindrical casing, a spirally grooved propeller within the tubular member, al pin extending through the tubular member and into the spiral groove, the tubular casing hav-` ing arcuate slots therethrough, clip lingers extending through the slots and engaging the discs and means for rotating the propeller.

10. A combined music rack and sheet music turner comprising a tubular section, a tubu lar casing atlixed thereto, spaced apart discs having diametrically opposite recesses therein rotatably mounted within the casing, a propeller rotatably mounted within the tubular member and capable of engaging the discs, means for advancing the propeller within the casing the thickness of one of the discs and one of the spaces while simultaneously rotating the propeller 180O and a locking linger secured to the propeller in registration with the recesses of the discs.

11. A combined music rack and sheet music turner comprising a cylindrical casing, spaced apart centrally apertured rotatable discs having recesses on diametrically opposite sides of the apertures, a tubular member aflixed tothe casing, a propeller rotatably mounted within the tubular member, diametrically opposite lugs extending from the propeller for passing through the recesses, an operating rod secured to the propeller and a foot pedal geared to the operating rod.

12. A combined music rack and music sheet turn er comprising a cylindrical casing, spaced apart centrally apertured discs having recrosses on diametrically opposite sides of the apertures and rotatably mounted within the casing, disc locking instrumentalities secured to the casing and adapted to progressively release from locking engagement a single disc upon the revolution of the propeller 180 about its axis and lockingly engage the previously released disc by the previous rotation of the propeller 180O about its axis.

13. A combined music rack and sheet music turner comprising a cylindrical Casing, a shaft concentric with the casing, centrally apertured discs having recesses on the diametrically opposite sides of the apertures and rotatably mounted on the shaft, spacing members interposed between the discs, a tubular niember affixed to the casing, a spirally grooved propeller rotatably mounted Within the tubular member, a pin extending through the side of the tubular member and into the groove and a foot pedal'gearcd to the propeller for rotating the propeller 180o about its axis in either direction upon the depression of the foot i pedal.

lll. A combined music rack and sheet music turner comprising a cylindrical casing, a plurality of spaced apart discs rotatably mounted within the casing, a tubular member ailixed to the casing, a propeller having diametrically opposite lugs extending therefrom and rotatably mounted within the tubular member, means for advancing the propeller within the casing a distance equal to the thickness of a disc and a space between the discs for engagin the recesses with the lugs by rotating the propeller 1800 about its axis and a foot pedal geared to the propeller for rotating the propeller 180o about its axis in either direction by depression of the foot pedal.

15. A combined music rack and sheet music turner comprising acylindrical casing, a shaft positioned concentric within the casing, a plurality of spaced apart discs rotatable on the shaft and having recesses therein at diametrically opposite points of the shafts, a tubular member having lugs extending from its dia-V metrically opposite sides and rotatably on the shaft, said tubular member having a spiral groove cut in the face thereof, a pin extending through the tubular member and into the groove, a foot pedal geared to the propeller and adapted to rotate the same 180O about its axis upon depression of the foot pedal.

In testimony whereof I aiiix my signature.

ALBERT nRrcssoN. 

